I've made the decision to purchase the X100s, but won't be for a few months. In the mean time, I want to learn as much about it as I can. It seems, Fuji has some ways to go in the split image focusing, which is fine. This is their first go at it, and thankfully there are alternatives built into the camera. I've tried using focus peaking in the NEX, and it just annoyed the frak out of me! I found it more distracting than helpful (but I'm used to viewfinders with almost no distractions). I also haven't regularly used a NEX, so never really learned it (something that won't the case with the Fuji).